{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "We recruited 82 PAH - exposed workers and 62 unexposed controls , assessed exposure levels by urinary 1 - hydroxypyrene , and measured genetic damages by comet assay , bleomycin sensitivity , and micronucleus assay ."}
{"Chemical": ["PAH", "1 - hydroxypyrene", "bleomycin"]}